🌡 Fifth UK Heatwave? Experts Warn of More Sweltering Days Ahead
By Fidelis News Staff | 15 August 2025
The UK has barely cooled from its fourth heatwave of the summer but early September could bring another blast of intense heat. Weather experts and long-range forecasters are hinting at a possible fifth UK heatwave, raising questions about whether this summer could become the hottest on record.
Why Another Heatwave Could Be on the Way
Met Office long-range forecasts point to above-average temperatures, particularly in southern England, in the first half of September. While unsettled weather and thunderstorms are possible, there’s a growing chance that high pressure could settle back in, sending the mercury soaring again.
“We are seeing signs that temperatures will remain above the seasonal norm into early September,” forecasters noted this week.
If it materialises, it would follow the recent scorching spell that peaked earlier this week (read our full heatwave update here) and could cement 2025 as one of the UK’s hottest and sunniest years on record.
The Risks: Heatwaves, Wildfires, and Health Warnings
This summer’s relentless heat has already fuelled multiple wildfires across the UK, destroyed thousands of hectares of land, and pushed emergency services to the limit. If another prolonged hot spell arrives, NHS heat-health alerts could be reissued, and wildfire risks may climb again.
Scientists are even warning about so-called “firewaves”, periods when extreme heat and drought spark multiple blazes at once.
What Could Stop It?
Not all forecasters agree a fifth heatwave is inevitable. Atlantic storm systems and tropical storm remnants could inject cooler, wetter conditions into the mix. However, as we saw with the last heatwave, short-lived storms can give way to another round of sweltering sunshine.
Looking Ahead
If the high temperatures return, it could keep the UK in an unbroken cycle of heat spikes and with climate patterns shifting, experts warn this may become the new normal.
For context, check out our full weather warning archive for previous updates.
Fidelis News is free to read but not free to make.
Support independent reporting via Buy Me a Coffee
